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Washer — Wash er, n. [AS. w[ae]scere.] 1. One who, or that which, washes. [1913 Webster] 2. A ring of metal, leather, or other material, or a perforated plate, used for various purposes, as around a bolt or screw to form a seat for the head or nut, or… … The Collaborative International Dictionary of English

washer — flat ring for sealing joints or holding nuts, mid 14c., generally considered an agent noun of WASH (Cf. wash) (v.), but the sense connection is difficult, and the noun may derive instead from the ancestor of Fr. vis screw, vise … Etymology dictionary

washer — [wôsh′ər] n. 1. a person who washes 2. a flat disk or ring of metal, leather, rubber, etc., used variously to make a seat for the head of a bolt or for a nut or faucet valve, to lock a nut in place, to provide a bearing surface, to serve as a… … English World dictionary

washer — A flat disc with a hole in the center. It may be made of metal, rubber, plastic, or leather. It is often placed under a nut to even out pressure and prevent damage to the part on which it rests. See bridge washer crush washer cup washer dish… … Dictionary of automotive terms

washer — [[t]wɒ̱ʃə(r)[/t]] washers 1) N COUNT A washer is a thin flat ring of metal or rubber which is placed over a bolt before the nut is screwed on. 2) N COUNT A washer is the same as a washing machine. [INFORMAL] … English dictionary

washer — UK [ˈwɒʃə(r)] / US [ˈwɑʃər] noun [countable] Word forms washer : singular washer plural washers 1) a small flat ring used for filling the space between two metal parts, for example between a surface and the top of a screw 2) informal a washing… … English dictionary